Keeping FEHB in Retirement: The Five-Year Rule

Updated August 2026 · Educational only — not financial, tax, or legal advice

Of everything in your federal benefits package, retiree health insurance may be the single most valuable piece. For most employees and annuitants, the government contribution continues under the FEHB "fair share" formula: the lesser of 72% of the program-wide weighted average premium or 75% of the selected plan's total premium. But there's one rule standing between you and that benefit, and unlike most retirement mistakes, this one can become permanently unfixable. It's called the five-year rule.

The three requirements

To continue your Federal Employees Health Benefits (FEHB) coverage into retirement, all three must be true:

• The five-year test. You must have been enrolled in FEHB (or covered as a family member under someone else's FEHB enrollment) for the five years of service immediately before your retirement — or, if shorter, for all service since your first opportunity to enroll.
• An immediate annuity. You must retire on an immediate annuity (not a deferred one) — which is exactly why a postponed retirement beats a deferred one for keeping FEHB.
• Enrolled on the day your annuity starts. You must be covered by FEHB at the moment you retire.

What counts toward the five years

• Coverage as a family member under another FEHB plan counts. If you were covered under your spouse's FEHB enrollment, that time counts toward your five years.
• Switching plans does not reset the clock. You can change plans, options, or carriers every open season — the five-year test cares that you were continuously covered by FEHB, not that you stayed in one plan.
• Breaks in federal service generally don't hurt you as long as you were covered during your actual periods of service that count.

What does NOT count — and how people fail the test

The classic failures all share a theme: the employee was covered by something, just not FEHB, during part of the five years.

• Coverage under a spouse's private (non-FEHB) employer plan does not count. The employee who rode on a spouse's corporate insurance for years and switched to FEHB only at 59, planning to retire at 62, has just three years of FEHB — test failed.
• Dropping FEHB "temporarily" during a tight budget year, then re-enrolling, can break the five-year window.
• Enrolling late in your career, period.

Waivers are rare — don't plan around one

OPM can waive the five-year requirement only in exceptional circumstances and only in its sole discretion. Treat the five-year rule as firm and plan to meet it on your own.

How to protect yourself (do this early)

1. Pull your enrollment history. Your eOPF and your SF-2809 (health benefits election) records show your FEHB enrollment over time. Confirm continuous FEHB coverage — or covered-family-member status under FEHB — for the five years before your planned date.
2. If there's any gap or ambiguity, ask HR in writing and keep the answer. Coverage type matters: family member under FEHB counts; family member under a private plan does not.
3. Do this years out, not months out. The only way to fix a short enrollment history is time — and the clock only runs while you're enrolled.

The same five-year concept applies to your life insurance — see FEGLI in retirement. And once you reach 65, FEHB starts coordinating with Medicare, which brings its own decision: FEHB and Medicare Part B.

One more link to know: for your spouse to keep FEHB after you die, they must be receiving a survivor annuity — which makes your FERS survivor annuity election part of the same FEHB decision, not a separate one.